Unique strings

Count the exact number of unique tokens as fast as possible.

Input

One token per line on STDIN:

JWXcKKaWzvFL5
Rof
3ztCpA
5wHcGN
*UiEMthaTS*g

Output

Print the exact count of unique tokens to STDOUT.

Constraints

Character set: 0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ@#%*
Maximum token length: 16
Approximately 1,000,000 unique tokens

Restrictions:20s512Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.11	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

Back to listMar 21, 2026 03:53

Yuriy Lyfenko

Score: 4,815

Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 13:56	M-Rochat	10.00	Custom	Solution Held

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 21, 2026 04:06	4,783	181,827,142	154,842,000	2,996,000	2,441,216
2	Mar 21, 2026 04:02	4,783	180,553,985	154,842,000	2,996,000	2,285,568
3	Mar 21, 2026 04:06	4,785	180,590,111	154,921,000	2,998,000	2,445,312
4	Mar 21, 2026 04:04	4,786	182,202,323	154,937,000	2,998,000	2,285,568
5	Mar 21, 2026 03:53	4,789	178,364,189	155,044,000	3,000,000	2,285,568
6	Mar 21, 2026 04:06	4,789	181,953,817	155,041,000	3,000,000	2,449,408
7	Mar 21, 2026 04:04	4,790	178,674,355	156,059,000	2,000,000	2,285,568
8	Mar 21, 2026 03:53	4,791	180,888,329	155,100,000	3,001,000	2,285,568
9	Mar 21, 2026 03:53	4,793	178,352,447	156,181,000	2,002,000	2,531,328
10	Mar 21, 2026 03:53	4,794	180,486,816	156,205,000	2,002,000	2,285,568
11	Mar 21, 2026 04:06	4,797	188,557,839	156,286,000	2,003,000	2,285,568
12	Mar 21, 2026 03:53	4,798	182,470,802	156,319,000	2,004,000	2,449,408
13	Mar 21, 2026 04:06	4,798	181,233,056	156,318,000	2,004,000	2,449,408
14	Mar 21, 2026 04:06	4,798	179,838,643	156,343,000	2,004,000	2,285,568
15	Mar 21, 2026 04:04	4,801	181,212,678	155,432,000	2,989,000	2,453,504
16	Mar 21, 2026 03:53	4,802	182,535,298	156,456,000	2,005,000	2,437,120
17	Mar 21, 2026 04:04	4,807	183,794,464	156,640,000	1,995,000	2,445,312
18	Mar 21, 2026 04:06	4,808	188,423,352	155,679,000	2,993,000	2,285,568
19	Mar 21, 2026 04:04	4,810	183,178,842	155,720,000	2,994,000	2,441,216
20	Mar 21, 2026 04:04	4,810	179,905,228	156,740,000	1,996,000	2,523,136
21	Mar 21, 2026 03:53	4,813	180,715,003	156,837,000	1,997,000	2,445,312
22	Mar 21, 2026 04:06	4,815	179,695,675	156,893,000	1,998,000	2,281,472
23	Mar 21, 2026 04:06	4,826	182,417,704	157,256,000	2,003,000	2,445,312
24	Mar 21, 2026 04:06	4,828	178,790,614	158,330,000	1,002,000	2,445,312
25	Mar 21, 2026 04:06	4,837	182,076,144	156,644,000	2,993,000	2,441,216
26	Mar 21, 2026 04:04	4,869	188,281,816	158,696,000	1,996,000	2,277,376
27	Mar 21, 2026 04:06	4,899	188,364,205	158,687,000	2,994,000	2,285,568
28	Mar 21, 2026 04:03	4,982	190,930,957	162,395,000	2,004,000	2,285,568
29	Mar 21, 2026 04:03	4,984	194,368,233	162,471,000	2,005,000	2,445,312
30	Mar 21, 2026 04:03	5,013	189,771,821	163,427,000	2,005,000	2,437,120
31	Mar 21, 2026 03:53	5,515	203,239,118	179,996,000	1,999,000	2,285,568
32	Mar 21, 2026 03:53	5,554	222,740,006	182,296,000	1,001,000	2,445,312
33	Mar 21, 2026 04:02	5,759	215,388,735	187,052,000	2,984,000	2,285,568
34	Mar 21, 2026 04:02	6,061	229,183,855	196,041,000	3,980,000	2,285,568
35	Mar 21, 2026 03:53	6,160	227,108,937	200,302,000	2,989,000	2,449,408
36	Mar 21, 2026 04:06	6,482	250,878,989	210,917,000	2,998,000	2,285,568
37	Mar 21, 2026 03:53	6,497	240,256,439	212,384,000	2,003,000	2,441,216
38	Mar 21, 2026 04:04	6,539	238,032,628	213,788,000	1,998,000	2,285,568
39	Mar 21, 2026 04:06	6,927	264,803,943	225,613,000	2,994,000	2,285,568
40	Mar 21, 2026 04:06	7,040	260,133,709	231,317,000	997,000	2,285,568
41	Mar 21, 2026 03:53	7,066	263,775,365	230,195,000	2,989,000	2,285,568
42	Mar 21, 2026 04:04	7,820	298,055,676	255,087,000	2,977,000	2,285,568

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1